Chairs (5)
I believe the answer is:
seats
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">chairs</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for seats that I've seen before include "Chairs, stools" , "Parliamentary constituencies" .)